哈希空间 Ctrl + F 进行搜索
首页 php手册中文版 CSS中文手册 哈希文档 Markdown在线工具

RegexIterator::__construct

(PHP 5 >= 5.2.0, PHP 7, PHP 8)

RegexIterator::__constructCreate a new RegexIterator

说明

public RegexIterator::__construct(
    Iterator $iterator,
    string $pattern,
    int $mode = RegexIterator::MATCH,
    int $flags = 0,
    int $pregFlags = 0
)

Create a new RegexIterator which filters an Iterator using a regular expression.

参数

iterator

The iterator to apply this regex filter to.

pattern

The regular expression to match.

mode

Operation mode, see RegexIterator::setMode() for a list of modes.

flags

Special flags, see RegexIterator::setFlags() for a list of available flags.

pregFlags

The regular expression flags. These flags depend on the operation mode parameter:

RegexIterator preg_flags
operation mode available flags
RegexIterator::ALL_MATCHES See preg_match_all().
RegexIterator::GET_MATCH See preg_match().
RegexIterator::MATCH See preg_match().
RegexIterator::REPLACE none.
RegexIterator::SPLIT See preg_split().

错误/异常

Throws an InvalidArgumentException if the pattern argument is invalid.

范例

示例 #1 RegexIterator::__construct() example

Creates a new RegexIterator that filters all strings that start with 'test'.

<?php
$arrayIterator 
= new ArrayIterator(array('test 1''another test''test 123'));
$regexIterator = new RegexIterator($arrayIterator'/^test/');

foreach (
$regexIterator as $value) {
    echo 
$value "\n";
}
?>

以上例程的输出类似于:

test 1
test 123

参见

打开 哈希空间 微信小程序中查看更佳